Java Key Pair Create generateKey()

Description

generate Key

License

Open Source License

Declaration

public static void generateKey() 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.File;

import java.io.FileOutputStream;
import java.io.IOException;

import java.io.ObjectOutputStream;

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;

public class Main {
    /**//  w  w  w . j  a va2  s.co m
     * String to hold name of the encryption algorithm.
     */
    public static final String ALGORITHM = "RSA";
    /**
     * String to hold the name of the private key file.
     */
    public static final String PRIVATE_KEY_FILE = "E:/1AARedMedicaWakeUp/keys/private.key";
    /**
     * String to hold name of the public key file.
     */
    public static final String PUBLIC_KEY_FILE = "E:/1AARedMedicaWakeUp/keys/public.key";

    public static void generateKey() {

        try {
            final KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM);
            keyGen.initialize(512);
            final KeyPair key = keyGen.generateKeyPair();

            File privateKeyFile = new File(PRIVATE_KEY_FILE);
            File publicKeyFile = new File(PUBLIC_KEY_FILE);

            // Create files to store public and private key
            if (privateKeyFile.getParentFile() != null) {
                privateKeyFile.getParentFile().mkdirs();
            }
            privateKeyFile.createNewFile();

            if (publicKeyFile.getParentFile() != null) {
                publicKeyFile.getParentFile().mkdirs();
            }
            publicKeyFile.createNewFile();

            // Saving the Public key in a file
            ObjectOutputStream publicKeyOS = new ObjectOutputStream(new FileOutputStream(publicKeyFile));
            publicKeyOS.writeObject(key.getPublic());
            publicKeyOS.close();

            // Saving the Private key in a file
            ObjectOutputStream privateKeyOS = new ObjectOutputStream(new FileOutputStream(privateKeyFile));
            privateKeyOS.writeObject(key.getPrivate());
            privateKeyOS.close();

            //      Key pubKey = key.getPublic();
            //       Key privKey = key.getPrivate();
            //byte[] privateKeyBytes = privKey.getEncoded();
            //      byte[] publicKeyBytes = pubKey.getEncoded();
            //chiperTexto = new String(Base64.getEncoder().encode(publicKeyBytes));
            //chiperTexto2 = new String(Base64.getEncoder().encode(privateKeyBytes));
            //        System.out.println("pubKey1: "+chiperTexto);
            //        System.out.println("privKey1: "+chiperTexto2);
        } catch (NoSuchAlgorithmException | IOException e) {
        }

    }
}

Related

1. generateKey()
2. generateKey()
3. generateKey()
4. generateKey()
5. generateKey()
6. generateKey()
7. generateKey()
8. generateKey()